McGregor has now called on Mayweather's advisor Al Haymon and
Mayweather himself to sign on the dotted line, so that the two
can come to blows later in the year.

"The first, and most important, part of this historic contract
has now officially been signed off on," McGregor said.
"Congratulations to all parties involved. We now await Al Haymon
and his boxer’s signature in the coming days."

McGregor may be made to wait for Mayweather's agreement as the
former five-weight world boxing champion is currently helping his
protégé Gervonta Davis get ready for his first IBF super
featherweight world title defence against British contender Liam
Walsh in London on Saturday.